A
product that you applied yesterday, which you forgot to put more on of
today. But its ok, because you still have some on from the
day before.
Person 1: "Man I forgot to put on deodorant...good thing i have rollover from yesterday"
Example 2:
Girl: "I left my make-up bag at home, I am going to
smear my rollover mascara from yesterday into eye shadow
today."